
the positive terminal and black for the negative.
The one with the spring contact is the negative
terminal. Again, if you’re not using JSTs, you can
solder these terminal wires directly to the PCB
later (BAT+ and BAT– pads).
Then install the terminal plates into the battery
slots as shown in Figure
J
.
5. MOUNT THE LED
For illumination I’ve used a big 8mm 0.5W “straw
hat” LED. Solder another male JST connector
(or hookup wires) to the LED’s terminals: red to
positive and black to negative.
Mount the LED into the holder and then install
it in the main enclosure, using the notch to align
it. Now seal the LED from all sides. You can use
hot glue ...